package com.zzyl.framework.web.exception;

import javax.servlet.http.HttpServletRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingPathVariableException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
import com.zzyl.common.constant.HttpStatus;
import com.zzyl.common.core.domain.AjaxResult;
import com.zzyl.common.core.text.Convert;
import com.zzyl.common.exception.DemoModeException;
import com.zzyl.common.exception.ServiceException;
import com.zzyl.common.utils.StringUtils;
import com.zzyl.common.utils.html.EscapeUtil;

import java.sql.SQLIntegrityConstraintViolationException;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 全局异常处理器
 * 
 * @author ruoyi
 */
@RestControllerAdvice
public class GlobalExceptionHandler
{
    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    /**
     * 权限校验异常
     */
    @ExceptionHandler(AccessDeniedException.class)
    public AjaxResult handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
        return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
            HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(ServiceException.class)
    public AjaxResult handleServiceException(ServiceException e, HttpServletRequest request)
    {
        log.error(e.getMessage(), e);
        Integer code = e.getCode();
        return StringUtils.isNotNull(code) ? AjaxResult.error(code, e.getMessage()) : AjaxResult.error(e.getMessage());
    }

    /**
     * 请求路径中缺少必需的路径变量
     */
    @ExceptionHandler(MissingPathVariableException.class)
    public AjaxResult handleMissingPathVariableException(MissingPathVariableException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求路径中缺少必需的路径变量'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(String.format("请求路径中缺少必需的路径变量[%s]", e.getVariableName()));
    }

    /**
     * 请求参数类型不匹配
     */
    @ExceptionHandler(MethodArgumentTypeMismatchException.class)
    public AjaxResult handleMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        String value = Convert.toStr(e.getValue());
        if (StringUtils.isNotEmpty(value))
        {
            value = EscapeUtil.clean(value);
        }
        log.error("请求参数类型不匹配'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(String.format("请求参数类型不匹配，参数[%s]要求类型为：'%s'，但输入值为：'%s'", e.getName(), e.getRequiredType().getName(), value));
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public AjaxResult handleBindException(BindException e)
    {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return AjaxResult.error(message);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e)
    {
        log.error(e.getMessage(), e);
        String message = e.getBindingResult().getFieldError().getDefaultMessage();
        return AjaxResult.error(message);
    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public AjaxResult handleDemoModeException(DemoModeException e)
    {
        return AjaxResult.error("演示模式，不允许操作");
    }


    /**
     * 重名称异常
     */
    @ExceptionHandler(DuplicateKeyException.class)
    public AjaxResult handleDuplicateKeyException(DuplicateKeyException e)
    {
        e.printStackTrace();
        String message = e.getMessage();
        message = extractDuplicateInfo(message);
        String[] strs = extractDuplicateEntryAndKey(message);
        if (strs != null && strs.length == 2){
            String content=strs[0];
            String key=strs[1];
            String msg = UNIQUE_KEY_MAP.get(key);
            return AjaxResult.error((msg==null?"":msg)+"【"+content+"】重复了，请重新输入");
        }
        System.out.println( message);
        return AjaxResult.error("违反唯一约束，请重新输入");
    }

    /**
     * 从异常信息中提取重复键信息
     * @param message 完整的异常信息
     * @return 提取的重复键信息
     */
    private String extractDuplicateInfo(String message) {
        if (message == null) {
            return null;
        }
        // 使用正则表达式匹配 "Duplicate entry .* for key .*" 模式
        Pattern pattern = Pattern.compile("Duplicate entry '[^']+' for key '[^']+'");
        Matcher matcher = pattern.matcher(message);
        if (matcher.find()) {
            return matcher.group();
        }
        return null;
    }

    /**
     * 从异常信息中提取重复键信息
     * @param message 完整的异常信息
     * @return 提取的重复键信息
     */
    private String[] extractDuplicateEntryAndKey(String message) {
        if (message == null) {
            return null;
        }
        Pattern pattern = Pattern.compile("Duplicate entry '([^']+)' for key '([^']+)'");
        Matcher matcher = pattern.matcher(message);
        if (matcher.find()) {
            return new String[]{matcher.group(1), matcher.group(2)};
        }
        return null;
    }

    /**
     * 唯一约束提示信息
     */
    private static Map<String, String> UNIQUE_KEY_MAP=new HashMap<>();
    static {
        UNIQUE_KEY_MAP.put("nursing_level.name","护理等级名称");
        UNIQUE_KEY_MAP.put("nursing_plan.plan_name","护理计划名称");
        UNIQUE_KEY_MAP.put("nursing_project.name","护理项目名称");
        UNIQUE_KEY_MAP.put("bed.bed_number","床位编号");
        UNIQUE_KEY_MAP.put("floor.name","楼层名称");
        UNIQUE_KEY_MAP.put("room.code","房间编号");
        UNIQUE_KEY_MAP.put("room.name","房间名称");
        UNIQUE_KEY_MAP.put("device.binding_location_location_type_physical_location_type_product_id","相同类型的设备不能接入同一位置");
    }

}
